Amplifiers – With control of power supply or bias voltage – With control of input electrode or gain control electrode bias
Reexamination Certificate
2006-09-19
2006-09-19
Shingleton, Michael B (Department: 2817)
Amplifiers
With control of power supply or bias voltage
With control of input electrode or gain control electrode bias
C330S134000, C330S296000, C330S310000, C330S261000, C330S200000, C327S560000, C327S309000
Reexamination Certificate
active
07109791
ABSTRACT:
A system is provided for substantially reducing variation in AM to PM distortion of a power amplifier caused by variations in RF drive power and temperature. The system includes power control circuitry and power amplifier circuitry. The power amplifier circuitry includes an input amplifier stage and at least one additional amplifier stage coupled in series with the input amplifier stage. The power control circuitry provides a first supply voltage to the input amplifier stage based on a control signal such that the first supply voltage has a predetermined DC offset with respect to the control signal. The first supply voltage is provided such that the predetermined DC offset substantially reduces variations in the AM to PM distortion of the power amplifier due to variations in radio frequency (RF) drive power.
REFERENCES:
patent: 4446440 (1984-05-01), Bell
patent: 4701957 (1987-10-01), Smith
patent: 4739759 (1988-04-01), Rexroth et al.
patent: 5204637 (1993-04-01), Trinh
patent: 5251330 (1993-10-01), Chiba et al.
patent: 5276917 (1994-01-01), Vanhanen et al.
patent: 5438683 (1995-08-01), Durtler et al.
patent: 5442322 (1995-08-01), Kornfeld et al.
patent: 5493255 (1996-02-01), Murtojarvi
patent: 5511234 (1996-04-01), Ha
patent: 5530404 (1996-06-01), Debroux
patent: 5530923 (1996-06-01), Heinonen et al.
patent: 5553318 (1996-09-01), Ohmagari et al.
patent: 5559471 (1996-09-01), Black
patent: 5561395 (1996-10-01), Melton et al.
patent: 5574991 (1996-11-01), Miyama et al.
patent: 5606284 (1997-02-01), Tamesue et al.
patent: 5608353 (1997-03-01), Pratt
patent: 5621354 (1997-04-01), Mitzlaff
patent: 5629648 (1997-05-01), Pratt
patent: 5715527 (1998-02-01), Horii et al.
patent: 5808453 (1998-09-01), Lee et al.
patent: 5828692 (1998-10-01), Walley
patent: 5831477 (1998-11-01), Tsumura
patent: 5834975 (1998-11-01), Bartlett et al.
patent: 5847602 (1998-12-01), Su
patent: 5861776 (1999-01-01), Swanson
patent: 5862461 (1999-01-01), Yoshizawa et al.
patent: 5870296 (1999-02-01), Schaffer
patent: 5872481 (1999-02-01), Sevic et al.
patent: 5942946 (1999-08-01), Su et al.
patent: 5973556 (1999-10-01), Su
patent: 5994963 (1999-11-01), Kawai et al.
patent: 6002923 (1999-12-01), Sahlman
patent: 6025753 (2000-02-01), Landherr et al.
patent: 6043707 (2000-03-01), Budnik
patent: 6049704 (2000-04-01), Peckham et al.
patent: 6069530 (2000-05-01), Clark
patent: 6101224 (2000-08-01), Lindoff et al.
patent: 6137274 (2000-10-01), Rajagopalan
patent: 6148220 (2000-11-01), Sharp et al.
patent: 6160855 (2000-12-01), Nakamura et al.
patent: 6188877 (2001-02-01), Boesch et al.
patent: RE37407 (2001-10-01), Eisenberg et al.
patent: 6313705 (2001-11-01), Dening et al.
patent: 6327462 (2001-12-01), Loke et al.
patent: 6356745 (2002-03-01), Lee et al.
patent: 6366177 (2002-04-01), McCune et al.
patent: 6369649 (2002-04-01), Nakajima
patent: 6374127 (2002-04-01), Park
patent: 6377784 (2002-04-01), McCune
patent: 6397090 (2002-05-01), Cho
patent: 6405054 (2002-06-01), Rozenblit et al.
patent: 6414469 (2002-07-01), Zhou et al.
patent: 6441694 (2002-08-01), Turcotte et al.
patent: 6445249 (2002-09-01), Khan et al.
patent: RE38140 (2003-06-01), Schaffer
patent: 6701138 (2004-03-01), Epperson et al.
patent: 6734724 (2004-05-01), Schell et al.
patent: 2001/0006355 (2001-07-01), Park
patent: 2002/0002038 (2002-01-01), Seawright et al.
patent: 2002/0077066 (2002-06-01), Pehlke et al.
patent: 2002/0127980 (2002-09-01), Amanullah et al.
patent: 2003/0054778 (2003-03-01), Hecht
patent: 2003/0083026 (2003-05-01), Liu
patent: 2003/0090325 (2003-05-01), Canyon et al.
patent: 2004/0183511 (2004-09-01), Dening
patent: 61095603 (1986-05-01), None
patent: 5235657 (1993-09-01), None
P. Asbeck, G. Hanington, P.F. Chen, and L.Larson, “Efficiency and Linearity Improvement in Power Amlifiers for Wireless Communications,” Univeristy of California, San Diego, La Jolla, CA, IEEE 1998, pp. 15-18.
Bosley Ryan
Epperson Darrell G.
RF Micro Devices, Inc.
Withrow & Terranova , PLLC
LandOfFree
Tailored collector voltage to minimize variation in AM to PM... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Tailored collector voltage to minimize variation in AM to PM..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tailored collector voltage to minimize variation in AM to PM... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3535821